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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Playlister UK weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
For the latest conditions in Caernarfon, the live forecast above provides an up‑to‑the‑minute snapshot of temperature, wind and precipitation for the next few hours. With its coastal position on the Menai Strait, the town often sees mild but changeable weather, particularly during autumn and winter when Atlantic systems bring frequent rain and brisk winds.
What is the weather like in Caernarfon today?
The live forecast above shows the immediate outlook, but Caernarfon’s day‑to‑day weather is shaped by its north‑west Wales location. Expect:
- Mornings often start cloudy with patchy drizzle, clearing to brighter spells by midday.
- Afternoon sea breezes can strengthen, especially in spring and summer, keeping temperatures a few degrees cooler than inland.
- Rainfall is most likely from late autumn to early spring, with the wettest months being October through January.
- For a longer view, check the 10‑day weather forecast or a weather in Caernarfon 10 days outlook to plan ahead.
How does Caernarfon’s coastal location affect the forecast?
Being on the Menai Strait and close to Snowdonia, Caernarfon experiences microclimates that can differ from inland towns. Key effects:
- Sea fog (haar) can roll in from the Irish Sea during spring, reducing visibility for a few hours.
- Westerly winds bring mild, damp air in winter, so frost is less common than in nearby inland valleys.
- Summer temperatures rarely exceed 25 °C, thanks to cooling onshore breezes.
- For a full two‑week outlook, look up a 14 day weather forecast Caernarfon or bbc weather caernarfon 14 days.
What is the best time to visit Caernarfon for dry weather?
Late spring (May–June) and early autumn (September) are typically driest, with fewer Atlantic storms and more settled spells. July and August can be wetter due to showery conditions, but also offer the warmest sea temperatures.
How accurate are 14‑day forecasts for Caernarfon?
Beyond seven days, confidence drops noticeably because of the influence of Atlantic weather systems. A bbc weather caernarfon 7 days forecast is more reliable for planning daily activities, while longer‑range outlooks give a general trend.
Does Caernarfon experience snow?
Snow is rare in the town itself due to its coastal location and mild winter air. However, the nearby Snowdonia peaks often see snow cover from December to March, which can affect local travel and hill walking conditions.
For more UK locations, see the UK weather hub or compare conditions with Liverpool Weather.